Class: Binding

Inherits:
Object show all
Defined in:
lib/core/facets/binding/eval.rb,
lib/core/facets/binding/self.rb,
lib/core/facets/binding/vars.rb,
lib/core/facets/binding/cflow.rb,
lib/core/facets/binding/defined.rb

Instance Method Summary collapse

Instance Method Details

#[](x) ⇒ Object

Returns the value of some variable.

a = 2
binding["a"]  #=> 2



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# File 'lib/core/facets/binding/vars.rb', line 28

def []( x )
  eval( x.to_s )
end

#[]=(l, v) ⇒ Object

Set the value of a local variable.

binding["a"] = 4
a  #=> 4



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# File 'lib/core/facets/binding/vars.rb', line 37

def []=( l, v )
  eval( "lambda {|v| #{l} = v}").call( v )
end

#__DIR__ ⇒ Object

Return the directory of the file.



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# File 'lib/core/facets/binding/cflow.rb', line 27

def __DIR__
  eval("File.dirname(__FILE__)")
end

#__FILE__ ⇒ Object

Returns file name.



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# File 'lib/core/facets/binding/cflow.rb', line 21

def __FILE__
  eval("__FILE__")
end

#__LINE__ ⇒ Object

Returns line number.



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# File 'lib/core/facets/binding/cflow.rb', line 15

def __LINE__
  eval("__LINE__")
end

#call_stack(level = 1) ⇒ Object

Returns the call stack, in array format.



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# File 'lib/core/facets/binding/cflow.rb', line 33

def call_stack(level=1)
  eval( "call_stack( #{level} )" )
end

#called ⇒ Object

Retreive the current running method.

def tester; p called; end
tester  #=> :tester



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# File 'lib/core/facets/binding/cflow.rb', line 43

def called
  name = /\`([^\']+)\'/.match(caller(1).first)[1]
  return name.to_sym
end

#caller(skip = 0) ⇒ Object

Returns the call stack, same format as Kernel#caller()



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# File 'lib/core/facets/binding/cflow.rb', line 50

def caller( skip=0 )
  eval("caller(#{skip})")
end

#defined?(x) ⇒ Boolean

Returns the nature of something within the context of the binding. Returns nil if that thing is not defined.

Returns:

  • (Boolean) 


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# File 'lib/core/facets/binding/defined.rb', line 6

def defined?(x)
  eval("defined? #{x}")
end

#eval(str) ⇒ Object

Evaluate a Ruby source code string (or block) in the binding context.



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# File 'lib/core/facets/binding/eval.rb', line 7

def eval(str) #='', &blk )
  #if block_given?
  #  Kernel.eval( self, &blk )
  #elsif str
    Kernel.eval(str, self)
  #end
end

#local_variables ⇒ Object

Returns the local variables defined in the binding context

a = 2
binding.local_variables  #=> ["a"]



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# File 'lib/core/facets/binding/vars.rb', line 19

def local_variables()
  eval("local_variables")
end

#methodname ⇒ Object

There is a lot of debate on what to call this. method_name differs from #called only by the fact that it returns a string, rather then a symbol.

def tester; p methodname; end
tester  #=> "tester"



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# File 'lib/core/facets/binding/cflow.rb', line 62

def methodname
  name = /\`([^\']+)\'/.match(caller(1).first)[1]
  return name
end

#self ⇒ Object

Returns self of the binding context.



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# File 'lib/core/facets/binding/self.rb', line 5

def self()
  @self ||= eval("self")
  @self
end